Partly-printed DS as president, one page, 11.75 x 15.25, May 14, 1836. Patent issued to "Luke R. Prince, a citizen of the United States, [who] hath alleged that he has invented a new and useful improvement in the Cog-Cylinder Washing Machine." Prominently signed at the conclusion by President Jackson, and countersigned by Secretary of State John Forsyth and Attorney General Benjamin Franklin Butler. The white paper seal and ribbon affixed to the lower left remains intact, and the document retains its second page bearing a description of the invention (color copies included in sleeve on the reverse). Corner-mounted, matted, and framed under UV-protective museum glass to an overall size of 24 x 28. In fine condition.